Grilled cheese is very good. It's good for a reason — all that toasty bread and melted cheese makes for comfort food par excellence. But what if you add avocado? That's even nicer, isn't it? Here are four ways to do it.

Of course, this doesn't sound complicated — just genius. Add thinly sliced avocado and grill away. But each of these four recipes adds just a little extra twist, from chorizo to a touch of fontina cheese.